ADJE WebMail is a set of Perl CGI scripts which provide a Web interface to
existing email accounts on any POP3-compliant email server. The software
provides a complete interface, including encoding/decoding attachments, email
and URL markup in received emails, and an address book for each user.

AXIGEN is a fast, reliable and secure mail server
with an open architecture. It is designed for easy
management and allows full control of the email
traffic from a central Web/CLI admin module.
AXIGEN provides ESMTP, IMAP, and POP3 services and
has been tested with standard mail clients. A
special Webmail module enables email access and
delivery from Web browsers. During the evaluation
period, users are provided with full technical
support.

Aspose.Network is a suite of .NET components for network programming with support for the .NET logging framework and Microsoft Exchange Server. It can read and write Outlook Message files and provides an iCalendar engine and SSL support for the SMTP, POP3, and IMAP protocols, with mail merging features. It can import and export email messages in the MHT and EML formats. It supports all the features of SMTP, MIME, S/MIME, POP3, FTP, WhoIs, DNS, ICMP, IMAP, HTTP, SOCKS 4/4A, and SOCKS 5 components.

Autoblogger allows the quick and easy creation of
a static HTML photo blog in which the posts are
taken from messages that are stored in a POP3
account. It uses Template-Toolkit to allow the
index, archives, and RSS feed to be customized
with templates.

BEJY is a modular server application. It is packaged, by default, as a Web application container and mail server with SSL. It has functionality similar to inetd, and has some helper classes/functions to ease the implementation of new protocols. It provides a generic multithreaded TPC/IP server implementation with optional SSL support, covering the complete connection and thread management. Each supported service provides its protocol implementation. The current version comes with HTTP, SMTP, POP3, and IMAP protocol implementations. The HTTP protocol implementation also contains a servlet engine, a JSP 1.2 engine, a handler to invoke CGI, and other useful things. The mail protocols require a database using JDBC, as MySQL, MSSQL, and others.

Browser CRM is a Web-based suite combining
integrated email functionality with flexible and
powerful CRM (customer relationship management)
and collaboration tools. Browser CRM is a single,
comprehensive application that is accessible from
anywhere. Browser CRM logs incoming and outgoing
email against the customer record to build a
complete customer history along with other Browser
CRM events including Opportunities, Tasks,
Appointments, Memos, Documents, and custom events.

Buni Meldware Communication Suite is an enterprise
groupware product providing an email server,
calendar server, and a Web mail client. The Web
mail portion is written using Adobe's Flash and
provides a rich cross-browser experience. Protocol
support includes IMAP, POP, SMTP, iCAL, WCAP, and
more. It uniquely supports full database email
storage as well as file system storage of emails
on major database platforms, and is easily
installed via a Web Start graphical installation
process.